Customers of my MCH applications report that they cannot start some applications when my codehook service is running and Kaspersky AV is installed. On my test system I get the following runtime error when an application starts:

Thanks. At this point I'm not sure what the cause of the crash could be. It's complicating things a lot that it only occurs in combination with another 3rd party software.

This is definitely at the top of my priority list right now. I'll let you know as soon as I have something new to test. For now, as mentioned, you can use the 3.x driver in combination with the 4.x user mode library.

I've found that the new injection method I'm using is for some reason incompatible with Kaspersky. I'm pretty sure it's Kaspersky's fault, but there's not much I can do about it, and I've been told it also occurs with a couple other AV products. So I'll have to go back to the old injection method, which I'm very sad about, because the new one was better, simpler and cleaner.

Here's a new beta build which is the 4.x driver with all the new features, but with the 3.x injection method: